Dcommander has 6 repositories available. Follow their code on GitHub. 1 to 8 Demux circuit 3 to 8 Decoder/Demultiplexer. IC 74HC238 is used is used as decoder/ demultiplexer. 3 to 8 line decoder demultiplexer is a combinational circuit that can be used as both a decoder and a demultiplexer. IC 74HC238 decodes three binary address inputs (A0, A1, A2) into eight outputs (Y0 to Y7). The device also has three Enable. Express VPN Best for privacy. Number of IP addresses: 30,000 Number of servers: 3,000+ 3 months free with 1-year plan.
DCommander 2.8.0 – Advanced two-pane file manager. January 24, 2016 DCommander is a two-pane file manager that gives you full control over your computer’s filesystem.
A decoder is a combinational logic circuit which is used to change the code into a set of signals. It is the reverse process of an encoder. A decoder circuit takes multiple inputs and gives multiple outputs. A decoder circuit takes binary data of ‘n’ inputs into ‘2^n’ unique output. In addition to input pins, the decoder has a enable pin. This enables the pin when negated, makes the circuit inactive. in this article, we discuss 3 to 8 line Decoder and Multiplexer.
The below is the truth table for simple 1 to 2 line decoder where A is the input and D0 and D1 are the outputs.
The circuit shows the 1 to 2 decoder logic.
A demultiplexer is a device that takes a single input and gives one of the several output lines. A demultiplexer takes one single input data and then selects any one of the single output lines one at a time. It is the reverse process of a multiplexer. It is also called as a DEMUX or a data distributor. A DEMUX converts the input serial data line into output parallel data. A DEMUX gives ‘2n’ outputs for ‘n’ selection lines with a single input.
DEMUX is used when the circuit wishes to send the data signal to one of the many devices. A decoder is used to select among many devices whereas a demultiplexer is used to send the signal to many devices.
The below is the truth table for 1 to 2 demultiplexer with “I” as input data, D0 and D1 are the output data line and A is the selection line.
The circuit shows the 1 to 2 demultiplexer schematic.
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3 Line to 8 Line Decoder
This decoder circuit gives 8 logic outputs for 3 inputs and has a enable pin. The circuit is designed with AND and NAND logic gates. It takes 3 binary inputs and activates one of the eight outputs. 3 to 8 line decoder circuit is also called as binary to an octal decoder.
The decoder circuit works only when the Enable pin (E) is high. S0, S1 and S2 are three different inputs and D0, D1, D2, D3. D4. D5. D6. D7 are the eight outputs.
Circuit Diagram
3 to 8 Line Decoder Truth Table
The below table gives the truth table of 3 to 8 line decoder.
S0 | S1 | S2 | E | D0 | D1 | D2 | D3 | D4 | D5 | D6 | D7 |
x | x | x | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
1 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
1 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
1 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
When the Enable pin (E) is low all the output pins are low.
1 to 8 Demultiplexer
A 1 line to 8 line demultiplexer has one input, three select input lines and eight output lines. It distributes the one input data into 8 output lines depending on the selected input. Din is the input data, S0, S1, and S2 are select inputs and Y0, Y1, Y2, Y3, Y4, Y5, Y6, Y7 are the outputs.
Circuit Diagram
3 to 8 Decoder/Demultiplexer
IC 74HC238 is used is used as decoder/ demultiplexer. 3 to 8 line decoder demultiplexer is a combinational circuit that can be used as both a decoder and a demultiplexer. IC 74HC238 decodes three binary address inputs (A0, A1, A2) into eight outputs (Y0 to Y7). The device also has three Enable pins. The same combination is used as a demultiplexer.
Pin Configuration
The below is the pin configuration for the IC74HC238 3 to 8 line decoder or demultiplexer. It is a 16 pin DIP. Fundy designer 1 6 14 – professional album design software.
Circuit
The logical circuit explains the working of the IC 74HC238.
Features of 74HC238 IC
- Demultiplexing capability
- Multiple inputs enable for easy expansion
- Ideal for memory chip select decoding
- Active HIGH mutually exclusive outputs
- Multiple package option
Application of Decoder
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- The Decoders were used in analog to digital conversion in analog decoders.
- Used in electronic circuits to convert instructions into CPU control signals.
- They mainly used in logical circuits, data transfer.
Applications of Demultiplexer
- Used to connect a single source to multiple destinations.
- The Demux is used in communication systems to carry multiple data signals into a single transmission line.
- Used in Arithmetic Logic Units
- Used in serial to parallel converters in data communications.
Therefore, this is the basic information about 3 to 8 line decoder and demultiplexers. Hope you might have got some fundamental concepts about this topic by observing the digital logic circuits and truth tables and their applications. Furthermore, any doubts regarding this article or Latest electronics projects, You can write your views about this topic in the comment section below.
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Related Content
At one point in time you might encounter issues while using DCommander. Be it freezes, crashes or simply graphical glitches, they certainly can be annoying.
Fear not, as many of them can be solved quite easily following this guide.
1. DCommander doesn’t show other drives/volumes (internal or external)
Since the software is build with Apple’s sandbox policies in mind, it does not have access to the volumes location on your Mac. This is a sandbox security limitation.
To fix this, you need to allow filesystem access to the root of your main drive. Open DCommander’s Preferences window, go to the Troubleshooting section:
Click on Request Filesystem Access. You will see a new window similar to this:
Make sure you select “Macintosh HD” (or whatever your main drive is named) from the dropdown button, then click on Allow Access.
If all goes well, you should see a message like this, saying that the selected path is /
Now restart DCommander and you’ll notice that it now shows other drives and volumes.
2. DCommander doesn’t allow me to navigate outside a certain folder
Please follow the same steps as for the above issue. Manually allowing full filesystem access is a requirement introduced by Apple’s Sandbox policy.
3. DCommander freezes and/or glitches
While this may have various causes, a simple solution is to Reset All Settings. To do this, open DCommander’s Preferences window and go to the Troubleshooting section:
Click on Reset All Settings and restart DCommander. At this point the issues should be fixed. If not, it’s recommended that you uninstall then reinstall DCommander. Don’t worry, you won’t have to pay again when reinstalling.
4. Other issues
If this page doesn’t cover your issue, it’s likely that you’ll need support assistance. Send us an email and we’ll get back to you as soon as possible! Visit our contact page to send a message.